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Oubounyt M, Adlung L, Patroni F, Wenke NK, Maier A, Hartung M, Baumbach J, Elkjaer ML. Inference of differential key regulatory networks and mechanistic drug repurposing candidates from scRNA-seq data with SCANet. Bioinformatics 2023; 39:btad644. [PMID: 37862243 PMCID: PMC10628438 DOI: 10.1093/bioinformatics/btad644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 09/07/2023] [Accepted: 10/19/2023] [Indexed: 10/22/2023] Open
Abstract
MOTIVATION The reconstruction of small key regulatory networks that explain the differences in the development of cell (sub)types from single-cell RNA sequencing is a yet unresolved computational problem. RESULTS To this end, we have developed SCANet, an all-in-one package for single-cell profiling that covers the whole differential mechanotyping workflow, from inference of trait/cell-type-specific gene co-expression modules, driver gene detection, and transcriptional gene regulatory network reconstruction to mechanistic drug repurposing candidate prediction. To illustrate the power of SCANet, we examined data from two studies. First, we identify the drivers of the mechanotype of a cytokine storm associated with increased mortality in patients with acute respiratory illness. Secondly, we find 20 drugs for eight potential pharmacological targets in cellular driver mechanisms in the intestinal stem cells of obese mice. AVAILABILITY AND IMPLEMENTATION SCANet is a free, open-source, and user-friendly Python package that can be seamlessly integrated into single-cell-based systems medicine research and mechanistic drug discovery.
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Affiliation(s)
- Mhaned Oubounyt
- Institute for Computational Systems Biology, University of Hamburg, Hamburg 22607, Germany
| | - Lorenz Adlung
- Department of Medicine, Hamburg Center for Translational Immunology (HCTI) and Center for Biomedical AI (bAIome), University Medical Center Hamburg-Eppendorf (UKE), Hamburg 20246, Germany
| | - Fabio Patroni
- Institute for Computational Systems Biology, University of Hamburg, Hamburg 22607, Germany
- Center for Molecular Biology and Genetic Engineering (CBMEG), State University of Campinas (Unicamp), Campinas, SP 13083-875, Brazil
| | - Nina Kerstin Wenke
- Institute for Computational Systems Biology, University of Hamburg, Hamburg 22607, Germany
| | - Andreas Maier
- Institute for Computational Systems Biology, University of Hamburg, Hamburg 22607, Germany
| | - Michael Hartung
- Institute for Computational Systems Biology, University of Hamburg, Hamburg 22607, Germany
| | - Jan Baumbach
- Institute for Computational Systems Biology, University of Hamburg, Hamburg 22607, Germany
- Department of Mathematics and Computer Science, University of Southern Denmark, Odense 5000, Denmark
| | - Maria L Elkjaer
- Institute for Computational Systems Biology, University of Hamburg, Hamburg 22607, Germany
- Department of Neurology, Odense University Hospital, Odense 5000, Denmark
- Institute of Clinical Research, University of Southern Denmark, Odense 5000, Denmark
- Institute of Molecular Medicine, University of Southern Denmark, Odense 5000, Denmark
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ERRFI1 induces apoptosis of hepatocellular carcinoma cells in response to tryptophan deficiency. Cell Death Discov 2021; 7:274. [PMID: 34608122 PMCID: PMC8490388 DOI: 10.1038/s41420-021-00666-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 09/07/2021] [Accepted: 09/22/2021] [Indexed: 12/20/2022] Open
Abstract
Tryptophan metabolism is an essential regulator of tumor immune evasion. However, the effect of tryptophan metabolism on cancer cells remains largely unknown. Here, we find that tumor cells have distinct responses to tryptophan deficiency in terms of cell growth, no matter hepatocellular carcinoma (HCC) cells, lung cancer cells, or breast cancer cells. Further study shows that ERRFI1 is upregulated in sensitive HCC cells, but not in resistant HCC cells, in response to tryptophan deficiency, and ERRFI1 expression level positively correlates with HCC patient overall survival. ERRFI1 knockdown recovers tryptophan deficiency-suppressed cell growth of sensitive HCC cells. In contrast, ERRFI1 overexpression sensitizes resistant HCC cells to tryptophan deficiency. Moreover, ERRFI1 induces apoptosis by binding PDCD2 in HCC cells, PDCD2 knockdown decreases the ERRFI1-induced apoptosis in HCC cells. Thus, we conclude that ERRFI1-induced apoptosis increases the sensitivity of HCC cells to tryptophan deficiency and ERRFI1 interacts with PDCD2 to induce apoptosis in HCC cells.
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Xu L, Zhang B, Li W. Downregulated expression levels of USP46 promote the resistance of ovarian cancer to cisplatin and are regulated by PUM2. Mol Med Rep 2021; 23:263. [PMID: 33576437 PMCID: PMC7893694 DOI: 10.3892/mmr.2021.11902] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Accepted: 12/17/2020] [Indexed: 02/06/2023] Open
Abstract
Ovarian cancer (OC) is a major contributor to cancer-related mortality in women. Despite numerous drugs being available for the treatment and improving the prognosis of OC, resistance to clinical chemotherapy remains a major obstacle for the treatment of advanced OC. Therefore, determining how to reverse the chemoresistance of OC has become a research hotspot in recent years. The present study aimed to reveal the potential mechanism of OC chemoresistance. Reverse transcription-quantitative PCR and western blot analysis were performed to detect the expression levels of Ubiquitin-specific peptidase 46 (USP46) and Pumilio 2 (PUM2) in OC. Cell viability and apoptosis were evaluated by Cell Counting Kit-8 assay and flow cytometry, respectively. The association between USP46 and PUM2 was assessed by RNA immunoprecipitation. The results of the present study revealed that the expression levels of USP46 which is associated with tumor progression, was downregulated, while PUM2 expression levels were upregulated in cisplatin (DDP)-resistant OC cells and patient tissues. The downregulation of USP46 expression levels in SKOV3 cells significantly inhibited cell apoptosis and increased cell viability. In SKOV3/DDP cells, the upregulation of USP46 expression levels notably suppressed cell viability and increased cell apoptosis. The results of the RNA immunoprecipitation chip assay demonstrated that PUM2 bound to USP46 and regulated its expression. Furthermore, following the knockdown of USP46 expression, the mRNA and protein expression levels of the cell apoptosis-related protein, Bcl-2, were upregulated, whereas the expression levels of caspase-3, caspase-9 and Bax were significantly downregulated. In addition, phosphorylated AKT expression levels were notably upregulated. Following the overexpression of USP46 in SKOV3/DDP cells, the opposite trends were observed. In SKOV3 cells, the knockdown of PUM2 could reverse the DDP resistance induced by small interfering RNA-USP46 as the expression levels of Bcl-2 were downregulated whereas those of caspase-3, caspase-9 and Bax were upregulated compared with the small interfering-USP46 group. Similarly, in SKOV3/DDP cells, the overexpression of PUM2 could reverse DDP sensitivity induced by the overexpression of USP46. In conclusion, the findings of the present study suggested that the downregulation of USP46 expression levels may promote DDP resistance in OC, which may be regulated by PUM2. Therefore, targeting PUM2/USP46 may be an effective way to reverse DDP resistance in OC.
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Affiliation(s)
- Lei Xu
- Department of Gynecology, People's Hospital of Qingdao West Coast New Area, Qingdao, Shandong 266400, P.R. China
| | - Bin Zhang
- Department of Surgery, People's Hospital of Qingdao West Coast New Area, Qingdao, Shandong 266400, P.R. China
| | - Wenlan Li
- Department of Outpatient Department, People's Hospital of Qingdao West Coast New Area, Qingdao, Shandong 266400, P.R. China
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Yu Y, Chen Q, Zhang X, Yang J, Lin K, Ji C, Xu A, Yang L, Miao L. Long noncoding RNA ANRIL promotes the malignant progression of cholangiocarcinoma by epigenetically repressing ERRFI1 expression. Cancer Sci 2020; 111:2297-2309. [PMID: 32378752 PMCID: PMC7385372 DOI: 10.1111/cas.14447] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 04/28/2020] [Accepted: 04/30/2020] [Indexed: 12/11/2022] Open
Abstract
Long noncoding RNAs (lncRNAs) have recently been verified to have significant regulatory functions in many types of human cancers. The lncRNA ANRIL is transcribed from the INK4b-ARF-INK4a gene cluster in the opposite direction. Whether ANRIL can act as an oncogenic molecule in cholangiocarcinoma (CCA) remains unknown. Our data show that ANRIL knockdown greatly inhibited CCA cell proliferation and migration in vitro and in vivo. According to the results of RNA sequencing analysis, ANRIL knockdown dramatically altered target genes associated with the cell cycle, cell proliferation, and apoptosis. By binding to a component of the epigenetic modification complex enhancer of zeste homolog 2 (EZH2), ANRIL could maintain lysine residue 27 of histone 3 (H3K27me3) levels in the promoter of ERBB receptor feedback inhibitor 1 (ERRFI1), which is a tumor suppressor gene in CCA. In this way, ERRFI1 expression was suppressed in CCA cells. These data verified the key role of the epigenetic regulation of ANRIL in CCA oncogenesis and indicate its potential as a target for CCA intervention.
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Affiliation(s)
- Yang Yu
- Department of Oncology, Affiliated Tumor Hospital of Nantong University, Nantong, China
| | - Qiaoyu Chen
- Department of Pathology, Zhejiang University School of Medicine Second Affiliated Hospital, Hangzhou, China
| | - Xunlei Zhang
- Department of Oncology, Affiliated Tumor Hospital of Nantong University, Nantong, China
| | - Jian Yang
- Department of Urology, Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Kaibo Lin
- Department of Assisted Reproduction, Shanghai Ninth Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Congfei Ji
- Department of Oncology, Affiliated Tumor Hospital of Nantong University, Nantong, China
| | - Aibing Xu
- Department of Oncology, Affiliated Tumor Hospital of Nantong University, Nantong, China
| | - Lei Yang
- Department of Oncology, Affiliated Tumor Hospital of Nantong University, Nantong, China
| | - Lin Miao
- Medical Centre for Digestive Diseases, Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
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5
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Suo L, Chang X, Xu N, Ji H. The Anti-proliferative Activity of GnRH Through Downregulation of the Akt/ERK Pathways in Pancreatic Cancer. Front Endocrinol (Lausanne) 2019; 10:370. [PMID: 31263453 PMCID: PMC6590102 DOI: 10.3389/fendo.2019.00370] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Accepted: 05/24/2019] [Indexed: 11/20/2022] Open
Abstract
Gonadotropin-releasing hormone (GnRH) has been demonstrated to exert anti-proliferative functions on various tumor cells in endometrial, ovarian, bladder, or prostate cancer as a part of the autocrine system. In addition, the expression levels of GnRH and its receptor had been identified in breast cancer or non-reproductive cancers, such as glioblastoma and pancreatic cancer. Previous studies have reported abnormal GnRH expression in several malignant tumors, suggesting that GnRH and its receptor might be essential for tumourigenesis. In the present study, we attempted to clarify the mechanisms underlying GnRH function in cell proliferation in pancreatic cancer. Our results indicated that GnRH expression might be essential for the malignancy of pancreatic cancer. We then found that GnRH overexpression can induce cell apoptosis through activating the Bcl-2/Bax pathway and autophagy might be involved in the GnRH-mediated apoptosis in Panc1 cells. Further investigation showed that the inhibition of GnRH may promote tumor invasion and migration through upregulation of MMP2 expression in pancreatic cancer cells. Moreover, our results indicated that GnRH can regulate the Akt/ERK1/2 pathways to promote cell proliferation by inhibiting cell apoptosis in Panc1 cells. Therefore, our finding exhibited that the regulation of GnRH expression may be essential for tumourigenesis in pancreatic cancer, and might be a potential target for the treatment of the patients with pancreatic cancer.
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Affiliation(s)
- Linna Suo
- Department of Endocrinology and Metabolism, The Fourth Affiliated Hospital, China Medical University, Shenyang, China
| | - Xiaocen Chang
- Department of Endocrinology and Metabolism, The Fourth Affiliated Hospital, China Medical University, Shenyang, China
| | - Na Xu
- Natural Sciences Department, LaGuardia Community College, City University of New York, New York City, NY, United States
| | - Hongmei Ji
- Department of Endocrinology and Metabolism, The Fourth Affiliated Hospital, China Medical University, Shenyang, China
- *Correspondence: Hongmei Ji
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6
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Zhang C, Wang M, Shi C, Shi F, Pei C. Long non-coding RNA Linc00312 modulates the sensitivity of ovarian cancer to cisplatin via the Bcl-2/Caspase-3 signaling pathway. Biosci Trends 2018; 12:309-316. [PMID: 29952351 DOI: 10.5582/bst.2018.01052] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Chemotherapy is one of the main treatments for ovarian cancer (OC). Cisplatin combined with paclitaxel is a commonly used chemotherapy regimen. However, effective cancer therapy is hindered by a patient's resistance to cisplatin. The mechanism that potentially leads to that resistance is unclear. The current study examined the mechanism by which Linc00312 is involved in resistance to cisplatin in OC. Quantitative real-time PCR (RT-qPCR) was used to test for expression of Linc00312 in freshly frozen tissue samples of OC and in SKOV3 and SKOV3/DDP cells. In situ hybridization was performed to examine the distribution of Linc00312 expression in paraffin-embedded histological sections that were sensitive or resistant to cisplatin. The cell counting kit-8 assay was used to detect cell viability. Flow cytometry was used to measure cell apoptosis. RT-qPCR was performed to confirm changes in expression of MDR1, MRP1, Bcl-2, Bax, Caspase-3, and Caspase-9 mRNA. Levels of MDR1, Bcl-2, Bax, Caspase-3, and Caspase-9 protein were detected with Western blotting. Experiments indicated that the expression of Linc00312 decreased significantly in SKOV3/DDP cells compared to that in SKOV3 cells. Upregulation of Linc00312 can considerably increase the sensitivity of SKOV3/DDP cells to cisplatin, while down-regulation of Linc00312 has the exact opposite effect in SKOV3 cells. Linc00312 enhanced the sensitivity of SKOV3/DDP cells to cisplatin by promoting cell apoptosis via the Bcl-2/Caspase-3 signaling pathway. These findings suggest that Linc00312 may be a promising clinical strategy for the treatment of drug-resistant OC.
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Affiliation(s)
- Chuanqi Zhang
- Department of Gynecology and Obstetrics, Shengjing Hospital Affiliated of China Medical University
| | - Min Wang
- Department of Gynecology and Obstetrics, Shengjing Hospital Affiliated of China Medical University
| | - Cong Shi
- Department of Gynecology and Obstetrics, Shengjing Hospital Affiliated of China Medical University
| | - Fanli Shi
- Department of Gynecology and Obstetrics, Shengjing Hospital Affiliated of China Medical University
| | - Cheng Pei
- Department of Gynecology and Obstetrics, Shengjing Hospital Affiliated of China Medical University
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7
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Naudin C, Chevalier C, Roche S. The role of small adaptor proteins in the control of oncogenic signalingr driven by tyrosine kinases in human cancer. Oncotarget 2017; 7:11033-55. [PMID: 26788993 PMCID: PMC4905456 DOI: 10.18632/oncotarget.6929] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Accepted: 01/01/2016] [Indexed: 12/15/2022] Open
Abstract
Protein phosphorylation on tyrosine (Tyr) residues has evolved as an important mechanism to coordinate cell communication in multicellular organisms. The importance of this process has been revealed by the discovery of the prominent oncogenic properties of tyrosine kinases (TK) upon deregulation of their physiological activities, often due to protein overexpression and/or somatic mutation. Recent reports suggest that TK oncogenic signaling is also under the control of small adaptor proteins. These cytosolic proteins lack intrinsic catalytic activity and signal by linking two functional members of a catalytic pathway. While most adaptors display positive regulatory functions, a small group of this family exerts negative regulatory functions by targeting several components of the TK signaling cascade. Here, we review how these less studied adaptor proteins negatively control TK activities and how their loss of function induces abnormal TK signaling, promoting tumor formation. We also discuss the therapeutic consequences of this novel regulatory mechanism in human oncology.
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Affiliation(s)
- Cécile Naudin
- CNRS UMR5237, University Montpellier, CRBM, Montpellier, France.,Present address: INSERM U1016, CNRS UMR8104, Institut Cochin, Paris, France
| | - Clément Chevalier
- CNRS UMR5237, University Montpellier, CRBM, Montpellier, France.,Present address: SFR Biosit (UMS CNRS 3480/US INSERM 018), MRic Photonics Platform, University Rennes, Rennes, France
| | - Serge Roche
- CNRS UMR5237, University Montpellier, CRBM, Montpellier, France.,Equipe Labellisée LIGUE 2014, Ligue Contre le Cancer, Paris, France
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8
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Isik Z, Ercan ME. Integration of RNA-Seq and RPPA data for survival time prediction in cancer patients. Comput Biol Med 2017; 89:397-404. [PMID: 28869900 DOI: 10.1016/j.compbiomed.2017.08.028] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Revised: 08/20/2017] [Accepted: 08/25/2017] [Indexed: 10/19/2022]
Abstract
Integration of several types of patient data in a computational framework can accelerate the identification of more reliable biomarkers, especially for prognostic purposes. This study aims to identify biomarkers that can successfully predict the potential survival time of a cancer patient by integrating the transcriptomic (RNA-Seq), proteomic (RPPA), and protein-protein interaction (PPI) data. The proposed method -RPBioNet- employs a random walk-based algorithm that works on a PPI network to identify a limited number of protein biomarkers. Later, the method uses gene expression measurements of the selected biomarkers to train a classifier for the survival time prediction of patients. RPBioNet was applied to classify kidney renal clear cell carcinoma (KIRC), glioblastoma multiforme (GBM), and lung squamous cell carcinoma (LUSC) patients based on their survival time classes (long- or short-term). The RPBioNet method correctly identified the survival time classes of patients with between 66% and 78% average accuracy for three data sets. RPBioNet operates with only 20 to 50 biomarkers and can achieve on average 6% higher accuracy compared to the closest alternative method, which uses only RNA-Seq data in the biomarker selection. Further analysis of the most predictive biomarkers highlighted genes that are common for both cancer types, as they may be driver proteins responsible for cancer progression. The novelty of this study is the integration of a PPI network with mRNA and protein expression data to identify more accurate prognostic biomarkers that can be used for clinical purposes in the future.
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Affiliation(s)
- Zerrin Isik
- Computer Engineering Department, Dokuz Eylul Universitesi, 35160, Izmir, Turkey.
| | - Muserref Ece Ercan
- Computer Engineering Department, Dokuz Eylul Universitesi, 35160, Izmir, Turkey
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9
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Li H, Chen H, Wang H, Dong Y, Yin M, Zhang L, Wei J. MicroRNA-374a Promotes Hepatocellular Carcinoma Cell Proliferation by Targeting Mitogen-Inducible Gene 6 (MIG-6). Oncol Res 2017; 26:557-563. [PMID: 28734040 PMCID: PMC7844684 DOI: 10.3727/096504017x15000784459799] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is a disease with poor prognosis rates and ineffective therapeutic options. Previous studies have reported the involvement of mitogen-inducible gene 6 (MIG-6) as a negative regulator in tumor formation. MicroRNAs (miRNAs) play crucial roles in the development of different types of cancer. However, the underlying mechanisms of miRNAs in HCC are poorly understood. This study was aimed to investigate the role of miR-374a in HCC and its role in the regulation of expression of MIG-6. The results showed that MIG-6 overexpression significantly inhibited cell viability of HepG2 cells after 4 days posttransfection. Moreover, MIG-6 was a direct target of miR-374a, and the expression of MIG-6 was remarkably downregulated by the overexpression of miR-374a in HepG2 cells. Furthermore, we found that overexpression of miR-374a promoted cell viability; however, the protective effect was abolished by MIG-6 overexpression. In addition, overexpression of miR-374a activated the EGFR and AKT/ERK signaling pathways by regulation of MIG-6. Our findings suggest that miR-374a could promote cell viability by targeting MIG-6 and activating the EGFR and AKT/ERK signaling pathways. These data provide a promising therapeutic strategy for HCC treatment.
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Affiliation(s)
- Hui Li
- Department of Liver and Infectious Diseases, Liver Disease Research Center, The Second People's Hospital of Yunnan Province, Kunming, P.R. China
| | - Huicheng Chen
- School of Medicine, Yunnan University, Kunming, P.R. China
| | - Haibin Wang
- The Second Department of Liver Diseases, The Third People's Hospital of Kunming City, Kunming, P.R. China
| | - Yilong Dong
- School of Medicine, Yunnan University, Kunming, P.R. China
| | - Min Yin
- School of Medicine, Yunnan University, Kunming, P.R. China
| | - Liang Zhang
- Liver Disease Research Center, The Second People's Hospital of Yunnan Province, Kunming, P.R. China
| | - Jia Wei
- Department of Liver and Infectious Diseases, Liver Disease Research Center, The Second People's Hospital of Yunnan Province, Kunming, P.R. China
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10
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Wang H, Guo C, Ren D, Xu T, Cao Y, Xiao W, Jiao W. Let it bind: cyclization of Mig-6 segment 2 to target EGFR signaling in lung cancer. Med Chem Res 2017. [DOI: 10.1007/s00044-017-1849-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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11
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Kim TH, Yoo JY, Jeong JW. Mig-6 Mouse Model of Endometrial Cancer. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 943:243-259. [PMID: 27910070 DOI: 10.1007/978-3-319-43139-0_8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Endometrial cancer is a frequently occurring gynecological disorder. Estrogen-dependent endometrioid carcinoma is the most common type of gynecological cancer. One of the major pathologic phenomena of endometrial cancer is the loss of estrogen (E2) and progesterone (P4) control over uterine epithelial cell proliferation. P4 antagonizes the growth-promoting properties of E2 in the uterus. P4 prevents the development of endometrial cancer associated with unopposed E2 by blocking E2 actions. Mitogen inducible gene 6 (Mig-6, Errfi1, RALT, or gene 33) is an immediate early response gene that can be induced by various mitogens and common chronic stress stimuli. Mig-6 has been identified as an important component of P4-mediated inhibition of E2 signaling in the uterus. Decreased expression of MIG-6 is observed in human endometrial carcinomas. Transgenic mice with Mig-6 ablation in the uterus develop endometrial hyperplasia and E2-dependent endometrial cancer. Thus, MIG-6 has a tumor suppressor function in endometrial tumorigenesis. The following discussion summarizes our current knowledge of Mig-6 mouse models and their role in understanding the molecular mechanisms of endometrial tumorigenesis and in the development of therapeutic approaches for endometrial cancer.
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Affiliation(s)
- Tae Hoon Kim
- Department of Obstetrics, Gynecology & Reproductive Biology, Michigan State University College of Human Medicine, Grand Rapids, MI, 49503, USA
| | - Jung-Yoon Yoo
- Department of Obstetrics, Gynecology & Reproductive Biology, Michigan State University College of Human Medicine, Grand Rapids, MI, 49503, USA
| | - Jae-Wook Jeong
- Department of Obstetrics, Gynecology & Reproductive Biology, Michigan State University College of Human Medicine, Grand Rapids, MI, 49503, USA.
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12
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GUO QINGZHI, DONG BAIHUA, NAN FANGFANG, GUAN DONGDONG, ZHANG YOUZHONG. 5-Aminolevulinic acid photodynamic therapy in human cervical cancer via the activation of microRNA-143 and suppression of the Bcl-2/Bax signaling pathway. Mol Med Rep 2016; 14:544-50. [DOI: 10.3892/mmr.2016.5248] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Accepted: 12/22/2015] [Indexed: 11/06/2022] Open
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13
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Xu W, Zhu S, Zhou Y, Jin Y, Dai H, Wang X. Upregulation of mitogen-inducible gene 6 triggers antitumor effect and attenuates progesterone resistance in endometrial carcinoma cells. Cancer Gene Ther 2015; 22:536-41. [PMID: 26450625 DOI: 10.1038/cgt.2015.52] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Revised: 08/27/2015] [Accepted: 08/30/2015] [Indexed: 12/30/2022]
Abstract
Researches regarding mitogen-inducible gene 6 (Mig-6) have confirmed its role as a tumor suppressor and progesterone resistance factor in endometrium. In this study, after confirming the downregulation of Mig-6 protein in endometrial carcinoma (EC) tissues, the expression of Mig-6 was upregulated in Ishikawa cells by pCMV6-Mig-6 plasmid. We observed the increased apoptosis, decreased proliferation and invasion potential of Ishikawa cells after upregulation of Mig-6. The proapoptosis ability of P4 significantly enhanced by 39.36%, the antiproliferation ability increased by 37.90% and the anti-invasion ability increased by 48.89%, suggesting the antiprogesterone resistance potential of Mig-6 in endometrium. In addition, the results suggested that Mig-6 may induce Ishikawa cell apoptosis through the mitochondrial pathway, inhibit cell proliferation via the extracellular signal-regulated kinase pathway and the anti-invasion potential may associate with matrix metalloproteinase (MMP)-2 and MMP-9 downexpression. Therefore, upregulation of Mig-6 may add a new strategy to suppress endometrial tumorigenesis and attenuate the progesterone resistance during P4 treatment.
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Affiliation(s)
- W Xu
- Department of Gynecology, The First Affiliated Hospital of Nanjing Medical University (also named Jiangsu Province Hospital), Nanjing, People's Republic of China
| | - S Zhu
- Department of Gynecology, The First Affiliated Hospital of Nanjing Medical University (also named Jiangsu Province Hospital), Nanjing, People's Republic of China
| | - Y Zhou
- Department of Gynecology, The First Affiliated Hospital of Nanjing Medical University (also named Jiangsu Province Hospital), Nanjing, People's Republic of China
| | - Y Jin
- Department of Gynecology, The First Affiliated Hospital of Nanjing Medical University (also named Jiangsu Province Hospital), Nanjing, People's Republic of China
| | - H Dai
- Department of Gynecology, The First Affiliated Hospital of Nanjing Medical University (also named Jiangsu Province Hospital), Nanjing, People's Republic of China
| | - X Wang
- Department of Gynecology, The First Affiliated Hospital of Nanjing Medical University (also named Jiangsu Province Hospital), Nanjing, People's Republic of China
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14
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Peng C, Rao W, Zhang L, Wang K, Hui H, Wang L, Su N, Luo P, Hao YL, Tu Y, Zhang S, Fei Z. Mitofusin 2 ameliorates hypoxia-induced apoptosis via mitochondrial function and signaling pathways. Int J Biochem Cell Biol 2015; 69:29-40. [PMID: 26434502 DOI: 10.1016/j.biocel.2015.09.011] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Revised: 09/18/2015] [Accepted: 09/30/2015] [Indexed: 02/08/2023]
Abstract
Mitochondrial dynamics play a critical role in mitochondrial function and signaling. Although mitochondria play a critical role in hypoxia/ischemia, the further mechanisms between mitochondrial dynamics and ischemia are still unclear. The current study aimed to determine the role of mitofusin 2, a key regulator of mitochondrial fusion, in a hypoxic model and to explore a novel strategy for cerebral ischemia via modulation of mitochondrial dynamics. To the best of our knowledge, this is the first study to investigate both mitochondrial function and molecular pathways to determine the role of mitofusin 2 in hypoxia-induced neuronal apoptosis. In vivo, C57BL/6 mice (male, 19-25g) underwent a permanent middle cerebral artery occlusion for 12 or 24h (n=6 per group). In vitro, cobalt chloride was used to mimic hypoxia in immortalized hippocampal neurons. Down- or up-regulation of Mfn2 was induced to investigate the role of Mfn2 in hypoxia, especially in mitochondrial function and signaling pathways. The findings demonstrated that decreased mitofusin 2 occurred both in vivo and in vitro hypoxic models; second, the anti-apoptotic effect of Mfn2 may work via restoration of mitochondrial function; third, the modulation of the B Cell Leukemia 2/Bcl-2 Associated X protein and extracellular signal-regulated kinase 1/2 signaling pathways highlight the role of Mfn2 in signaling pathways beyond fusion. In summary, depletion of mitofusin 2 would lead to apoptosis both in normal or hypoxic conditions; however, mitofusin 2 overexpression could attenuate hypoxia-induced apoptosis, which represents a potential novel strategy for neuroprotection against ischemic brain damage.
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Affiliation(s)
- Cheng Peng
- Department of Neurosurgery, Xijing Institute of Clinical Neuroscience, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, PR China
| | - Wei Rao
- Department of Neurosurgery, Xijing Institute of Clinical Neuroscience, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, PR China
| | - Lei Zhang
- Department of Neurosurgery, Xijing Institute of Clinical Neuroscience, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, PR China
| | - Kai Wang
- Department of Neurosurgery, Xijing Institute of Clinical Neuroscience, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, PR China
| | - Hao Hui
- Department of Neurosurgery, Xijing Institute of Clinical Neuroscience, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, PR China
| | - Li Wang
- Department of Neurosurgery, Xijing Institute of Clinical Neuroscience, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, PR China
| | - Ning Su
- Department of Neurosurgery, Xijing Institute of Clinical Neuroscience, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, PR China
| | - Peng Luo
- Department of Neurosurgery, Xijing Institute of Clinical Neuroscience, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, PR China
| | - Ye-lu Hao
- Department of Neurosurgery, Xijing Institute of Clinical Neuroscience, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, PR China
| | - Yue Tu
- Department of Neurosurgery, Affiliated Hospital of Logistics, University of Chinese Armed Police Forces, Chenglin Road, Tianjin 300162, PR China
| | - Sai Zhang
- Department of Neurosurgery, Affiliated Hospital of Logistics, University of Chinese Armed Police Forces, Chenglin Road, Tianjin 300162, PR China.
| | - Zhou Fei
- Department of Neurosurgery, Xijing Institute of Clinical Neuroscience, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, PR China.
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15
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Park SY, Choi HK, Seo JS, Yoo JY, Jeong JW, Choi Y, Choi KC, Yoon HG. DNAJB1 negatively regulates MIG6 to promote epidermal growth factor receptor signaling. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2015; 1853:2722-30. [PMID: 26239118 DOI: 10.1016/j.bbamcr.2015.07.024] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Revised: 07/28/2015] [Accepted: 07/30/2015] [Indexed: 01/05/2023]
Abstract
Mitogen-inducible gene 6 (MIG6) is a tumor suppressor implicated in the development of human cancers; however, the regulatory mechanisms of MIG6 remain unknown. Here, using a yeast two-hybrid screen, we identified DnaJ homolog subfamily B member I (DNAJB1) as a novel MIG6-interacting protein. We found that DNAJB1 binds to and decreases MIG6 protein, but not mRNA, levels. DNAJB1 overexpression dosage-dependently decreased MIG6 protein levels. Conversely, DNAJB1 knockdown increased MIG6 protein levels. DNAJB1 destabilizes MIG6 by enhancing K48-linked ubiquitination of MIG6. However, knocking-down of DNAJB1 reduced the ubiquitination of MIG6. DNAJB1 positively regulates the epidermal growth factor receptors (EGFR) signaling pathway via destabilization of MIG6; however, DNAJB1 knockdown diminishes activation of EGFR signaling as well as elevation of MIG6. Importantly, the increased levels of MIG6 by DNAJB1 knockdown greatly enhanced the gefitinib sensitivity in A549 cells. Thus, our study provides a new molecular mechanism to regulate EGFR signaling through modulation of MIG6 by DNAJB1 as a negative regulator.
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Affiliation(s)
- Soo-Yeon Park
- Department of Biochemistry and Molecular Biology, Brain Korea 21 PLUS Project for Medical Sciences, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Hyo-Kyoung Choi
- Division of Nutrition and Metabolism Research Group, Korea Food Research Institute, Gyeonggi-do, Republic of Korea
| | - Jae Sung Seo
- Department of Biochemistry and Molecular Biology, Brain Korea 21 PLUS Project for Medical Sciences, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jung-Yoon Yoo
- Department of Biochemistry and Molecular Biology, Brain Korea 21 PLUS Project for Medical Sciences, Yonsei University College of Medicine, Seoul, Republic of Korea; Department of Obstetrics, Gynecology & Reproductive Biology, Michigan State University College of Human Medicine, MI, USA
| | - Jae-Wook Jeong
- Department of Obstetrics, Gynecology & Reproductive Biology, Michigan State University College of Human Medicine, MI, USA
| | - Youngsok Choi
- Fertility Center of CHA General Hospital, CHA Research Institute, CHA University, Seoul, Republic of Korea
| | - Kyung-Chul Choi
- Department of Biomedical Sciences, University of Ulsan College of Medicine, Seoul, Republic of Korea.
| | - Ho-Geun Yoon
- Department of Biochemistry and Molecular Biology, Brain Korea 21 PLUS Project for Medical Sciences, Yonsei University College of Medicine, Seoul, Republic of Korea.
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16
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Wang C, Jin A, Huang W, Tsang LL, Cai Z, Zhou X, Chen H, Chan HC. Up-regulation of Bcl-2 by CD147 Through ERK Activation Results in Abnormal Cell Survival in Human Endometriosis. J Clin Endocrinol Metab 2015; 100:E955-63. [PMID: 25996258 DOI: 10.1210/jc.2015-1431] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Abstract
CONTEXT Human endometriosis (EMS) is characterized by insufficient apoptosis. Our previous studies have shown elevated CD147 expression in human endometriotic tissues and its involvement in endometrial cell apoptosis. However, the exact underlying mechanism remains elusive. OBJECTIVE The objective was to examine the correlation of the highly expressed CD147 with anti-apoptotic factor Bcl-2 in human endometriotic tissues and to determine the CD147-regulated apoptotic pathway in human endometrial epithelial cell line (HES). DESIGN This was a laboratory study using human tissue analysis and HES cell culture. SETTING The setting was an academic research center and hospital. PATIENTS Patients were 30 women with ovarian EMS and 12 women without EMS. INTERVENTIONS mRNA levels of CD147 and Bcl-2 were evaluated in endometriotic tissues by quantitative real-time PCR. HES cells were transfected with pcDNA3.0-CD147 overexpressing plasmid or immune-depleted by CD147 antibody. MAIN OUTCOME MEASURES Main outcome measures were reverse transcription, quantitative real-time PCR, 3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium (MTS) assay, and Western blotting. RESULTS In human endometriotic tissues, Bcl-2 was up-regulated and positively correlated with CD147 expression, accompanied by activated ERK signaling. In HES cells, overexpression of CD147 increased viable cells and up-regulated Bcl-2 expression by activation of ERK signaling. Interference with CD147 function suppressed ERK signaling and decreased Bcl-2 expression, followed by accumulation of apoptotic factors, including cleaved caspase-9, cleaved caspase-3, and cleaved poly ADP-ribose polymerase. CONCLUSIONS The presently found strong correlations between Bcl-2 and CD147, ERK, and CD147 in human endometriotic lesions and the demonstrated reduced cell apoptosis through CD147-ERK-Bcl-2 intrinsic apoptosis signaling axis suggest that this CD147-regulated signaling may contribute to the enhanced cell survival in the progression of human EMS.
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Affiliation(s)
- Chaoqun Wang
- Epithelial Cell Biology Research Center (C.W., W.H., L.L.T., H.C., H.C.C.), Key Laboratory for Regenerative Medicine of the Ministry of Education of China, School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong; Department of Gynaecology (A.J., Z.C., X.Z., H.C.), The Second People's Hospital of Shenzhen, Shenzhen 518029, the People's Republic of China; and School of Biomedical Sciences Core Laboratory (H.C.C.), Shenzhen Research Institute, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Aihong Jin
- Epithelial Cell Biology Research Center (C.W., W.H., L.L.T., H.C., H.C.C.), Key Laboratory for Regenerative Medicine of the Ministry of Education of China, School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong; Department of Gynaecology (A.J., Z.C., X.Z., H.C.), The Second People's Hospital of Shenzhen, Shenzhen 518029, the People's Republic of China; and School of Biomedical Sciences Core Laboratory (H.C.C.), Shenzhen Research Institute, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Wenqing Huang
- Epithelial Cell Biology Research Center (C.W., W.H., L.L.T., H.C., H.C.C.), Key Laboratory for Regenerative Medicine of the Ministry of Education of China, School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong; Department of Gynaecology (A.J., Z.C., X.Z., H.C.), The Second People's Hospital of Shenzhen, Shenzhen 518029, the People's Republic of China; and School of Biomedical Sciences Core Laboratory (H.C.C.), Shenzhen Research Institute, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Lai Ling Tsang
- Epithelial Cell Biology Research Center (C.W., W.H., L.L.T., H.C., H.C.C.), Key Laboratory for Regenerative Medicine of the Ministry of Education of China, School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong; Department of Gynaecology (A.J., Z.C., X.Z., H.C.), The Second People's Hospital of Shenzhen, Shenzhen 518029, the People's Republic of China; and School of Biomedical Sciences Core Laboratory (H.C.C.), Shenzhen Research Institute, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Zhiming Cai
- Epithelial Cell Biology Research Center (C.W., W.H., L.L.T., H.C., H.C.C.), Key Laboratory for Regenerative Medicine of the Ministry of Education of China, School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong; Department of Gynaecology (A.J., Z.C., X.Z., H.C.), The Second People's Hospital of Shenzhen, Shenzhen 518029, the People's Republic of China; and School of Biomedical Sciences Core Laboratory (H.C.C.), Shenzhen Research Institute, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Xiaping Zhou
- Epithelial Cell Biology Research Center (C.W., W.H., L.L.T., H.C., H.C.C.), Key Laboratory for Regenerative Medicine of the Ministry of Education of China, School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong; Department of Gynaecology (A.J., Z.C., X.Z., H.C.), The Second People's Hospital of Shenzhen, Shenzhen 518029, the People's Republic of China; and School of Biomedical Sciences Core Laboratory (H.C.C.), Shenzhen Research Institute, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Hao Chen
- Epithelial Cell Biology Research Center (C.W., W.H., L.L.T., H.C., H.C.C.), Key Laboratory for Regenerative Medicine of the Ministry of Education of China, School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong; Department of Gynaecology (A.J., Z.C., X.Z., H.C.), The Second People's Hospital of Shenzhen, Shenzhen 518029, the People's Republic of China; and School of Biomedical Sciences Core Laboratory (H.C.C.), Shenzhen Research Institute, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Hsiao Chang Chan
- Epithelial Cell Biology Research Center (C.W., W.H., L.L.T., H.C., H.C.C.), Key Laboratory for Regenerative Medicine of the Ministry of Education of China, School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong; Department of Gynaecology (A.J., Z.C., X.Z., H.C.), The Second People's Hospital of Shenzhen, Shenzhen 518029, the People's Republic of China; and School of Biomedical Sciences Core Laboratory (H.C.C.), Shenzhen Research Institute, The Chinese University of Hong Kong, Shatin, Hong Kong
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